The Big Daddy would reach the door, which opened in his presence. He wandered into a glass hallway, which had a clunky security camera bolted on one glass partition. Along the way were a number of objects of cover to act as line of sight blockers for the camera. Wherever the camera looked, a spotlight from the camera would be pointed there. The spotlight would sweep across the floor, then swing back, covering the length of the hallway.
This hallway branched off to two different ways. One, the straight away, was right on the path the splicer had pointed the group on. The other was walked by the Big daddy, and led elsewhere. This hallway branched off right where the camera was installed, leaving a brief moment during each camera sweep that a large amount of the hallway was covered by the camera.